Jason L Andersen

US Patent:

H002205, Nov 6, 2007

Filed:

Jul 8, 2005

Appl. No.:

11/177684

Inventors:

Jason D. Andersen - Racine WI, US
Lienert Josef - Wilen, CH
Richard H. Middleton - Kenosha WI, US
Heinz Spieser - Lachen, CH

International Classification:

B65B 30/00

US Classification:

141 20

Abstract:

A method and apparatus for minimizing propellant emissions during the filling of an aerosol container that has a valve attached thereto and a valve stem extending from the valve. A filling head is disposed in a sealed relationship with a portion of the container so that the valve stem is encased within a recess of the filling head. A pressurized propellant is introduced into the filling head at a sufficient pressure to force the propellant through and around the valve stem and into the container. An incompressible purge medium is introduced into the filling head at a sufficient pressure to force the incompressible purge medium through and around the vale stem, wherein the incompressible purge medium flushes out residual propellant from the filling head and into the container.